Finding the Fourth Proportional to 381,667.82, 571,615.86 and 368,382.20

Step by Step Solution

1. Step 1: Write the proportion equation
   381,667.82 : 571,615.86 = 368,382.20 : x
2. Step 2: Convert to fraction form
   381,667.82/571,615.86 = 368,382.20/x
3. Step 3: Cross multiply
   381,667.82x = 571,615.86 × 368,382.20
4. Step 4: Simplify right side
   381,667.82x = 210,573,108,061.69
5. Step 5: Solve for x
   x = 210,573,108,061.69/381,667.82
6. Step 6: Final answer
   x = 551,718.27